Randall Amplifiers Forum

Randall Amplifiers => Randall Tube Amplifiers => Topic started by: GEAR-MAN on October 25, 2016, 01:34:02 PM

Title: RD20 Tube issues
Post by: GEAR-MAN on October 25, 2016, 01:34:02 PM
Aloha...

Just wondering of anyone had exchanged pre amp tubes and found issues like no sound and
can only use the ruby 12ax7 in the v1 section. I exchange it to mullard 12ax7 and found no sound. the gain section is dead. even if i swap out the other 12ax7s... no sound... i did notice a orange colored tip on the nipple of the 12ax7...all the others had no color tip...
the clean sounds good, so i put back the original ruby 12ax7 , and sound came back..but the gain is low...

it jus sounds terrible flat and no dynamics in the pre amp section.....

any one??
Title: Re: RD20 Tube issues
Post by: AnnaGross on January 07, 2019, 09:34:12 PM
Gusto ko talagang malaman kung paano i-scan ang site at karamihan sa mga impormasyon tungkol dito ay sapat na upang ipaliwanag?